No more error 500 if language file isn't found in callListener, Only matching on last 7.

* Only matching on the last 7 digits in get_calls (makes things less dependent on call prefixes being set properly)... this is how asteriskLogger worked.
* TODO: Need to make the {7} in regex configurable for people that want more precision.
* Added Warning to asteriskLogger when language file can't be found and falls back to us_en
Regenerated tmpl with {{save_label}} in it for save memo.